Simple Solar Spectral Model for Direct and Diffuse Irradiance on Horizontal and Tilted Planes at the Earth's Surface for Cloudless Atmospheres

Table of Contents

Summary


LIST OF FIGURES

  • 4-1 Comparison of Global Irradiance Calculated Using the SPCTRAL2 and BRITE codes for (0.5Ám)=0.10, Z=0°, and Tilt=0°.

  • 4-2 Comparison of Global Irradiance Calculated Using the SPCTRAL2 and BRITE Codes for (0.5Ám)=0.51, Z = 80°, and Tilt=0°.

  • 4-3 Comparison of Global Irradiance Calculated Using the SPCTRAL2 and BRITE Codes for (0.5Ám)=0.27, Z=48.19°, and Tilt=37°.

  • 4-4 Comparison of Global Irradiance Calculated Using the SPCTRAL2 and BRITE Codes for (0.5Ám)=0.27, Z=37°, and Tilt=60°.

  • 4-5 Turbidity at 0.5 Ám vs. Time of Day on 5 August 1981, Golden, CO.

  • 4-6 Precipitable Water Vapor vs. Time of Day on 5 August 1981, Golden CO.

  • 4-7 Comparison between Global Horizontal Irradiance Measured on 5 August 1981, Golden, CO, and Modeled Data Using SPCTRAL2.

  • 4-8 Comparison between Global Horizontal Irradiance Measured on 19 August 1981, Golden, CO, and Modeled Data Using SPCTRAL2.

  • 4-9 Comparison between Direct Normal Irradiance Measured on 19 August 1981, Golden, CO, and Modeled Data Using SPCTRAL2.

  • 4-10 Comparison between Global Radiation on a South-Facing Surface Tilted 40°, Measured on 19 August 1981, Golden, CO, and Modeled Data Using SPCTRAL2 (o on the graph).

  • 4-11 Comparison Between Global Horizontal Irradiance Measured on 18 August 1981, Golden, CO, and Modeled Data Using SPCTRAL2.

  • 5-1 Global Irradiance on a South-Facing Surface Tilted 37° for the Equinoxes (days 80 and 266) and for the Summer and Winter Solstices (days 172 and 356).

  • 5-2 Photon Flux Density per Wavelength Interval Corresponding to Global Irradiance Shown in Figure 5-1 (day 80).

  • 5-3 Photon Flux Density Per Photon Energy Interval Corresponding to Global Irradiance Shown in Figupe 5-1 (day 80).



    List of Tables

    Table of Contents


    Return to RReDC Homepage ( http://www.nrel.gov/rredc )